Would anyone happen to know the url's for Acer specific android builds?

My iconia tab (A500) cannot swallow the 356Mb download without errors. I thought that if I could download it to my desktop and transfer it to the tab, I might be able to do get the upgrades. The only other option I can see at this point is to root the tab, and I would REALLY prefer not to do that at this time...

Advice sought and appreciated!

Russ Wickstrom
Minneapolis, MN

Sent from my A500 using Android.net